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Compute the atmospheric pressure as well as total concentration of molecules at 5 km in molecules/cm3. Presume the temperature is -23 *C.
If 5.70 of is added to the calorimeter, what will be the final temperature of the solution in the calorimeter. The heat of solution,delta H solution, ofCaCl2of is -82.8kj/mole.
a weather balloon has a volume of 750 l when filled with helium at 8 oc at a pressure of 380 torr. what is the new
It takes 12 hours for half of the He in a container to leak out. If the same container is refilled with Ne, how long will it take for half of the Ne to leak out
Determine the value of the equilibrium constant, K_goal, for the reaction N2(g) + O2(g) + H2(g) 1/2N2H4(g) + NO2(g) ,K goal=? by making use of the following information
what is the charge of the carboxyl group in an amino acid at physiological pH. Please explain the charge. Also what is the charge above and below physiological pH
Presume the structure of compound Z C11H12O4 which has UV-Vis absorptions above 275 nm. Its IR spectrum depicts bands at 3208, 3175, 3100, 2947
1. calculate the h of a solution obtained by mixing 1 l of hydrochloric acid 1.0 m with 1 litre of sodium hydroxide
If the reaction 2H2S(g) 2H2(g) + S2(g) is carried out at 1065C, Kp = 0.0120. What is the value of Kc for the reaction H2(g)+1/2S2(g) H2S(g) at 1065C ?
A 62g piece of ice at 0 degrees C is added to a sample of water at 6 degrees C. All of the ice melts and the temp of water decreases to 0 degrees C. How many grams of water were in the sample?
2.58g of a gas has a volume of 3.97L at 745mmHg and 21 degrees celcius. What is the molecular weight of the gas?
concrete etching solution can be used to clean concrete before paining it. the directions tell you to dissolve 680g of
A 10.00 g sample of sucrose (C12H22O11) was dissolved in 200.0 g H2O. What will be the vapor pressure of this solution at 100C? Sucrose is non-disscociated, non-volatile solute.
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